Comparison of tire sizes 255/50 R19 and 245/55 R19
255/50R19
255
Tire width 
50
Profile height 
R19
Tire diameter 
432
RPM per km 255mm128mm738mm2317mm
255
50
19
245
55
19
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 738 | 752 | +14 (+1.9%) | ||
| Width, mm | 255 | 245 | -10 (-3.9%) | ||
| Circumference, mm | 2317 | 2363 | +46 (+2%) | ||
| Profile height, mm | 128 | 135 | +7 (+5.5%) | ||
| RPM per km | 432 | 423 | -9 (-2.1%) | ||
| Clearance change, mm | +7 | ||||
| Result: | The diameter differs by 1.9%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 102 |
| Difference (km/h) | 2 |
Sizes for comparison of tires 255/50 R19
R19
R18 -1
R20 +1
R17 -2
R21 +2
Sizes for comparison of tires 245/55 R19
R19
R18 -1
R20 +1
R17 -2
R21 +2